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<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>类的基础知识</title>
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<body>
    
</body>
<script>
      function sum(a,b,c) {
          return a+b+c
      }
      
      console.log(sum(1,1,1))


      function suma(a) {
          return (b)=>{
            return (c)=>{
             return a+b+c 
            }
          }
      }
      console.log(suma(1)(1)(1))
      
</script>
</html>